// Copyright (c) 2012 The Chromium Authors. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.

#ifndef CONTENT_BROWSER_RENDERER_HOST_PEPPER_PEPPER_GAMEPAD_HOST_H_
#define CONTENT_BROWSER_RENDERER_HOST_PEPPER_PEPPER_GAMEPAD_HOST_H_

#include <stdint.h>

#include "base/compiler_specific.h"
#include "base/macros.h"
#include "base/memory/weak_ptr.h"
#include "content/common/content_export.h"
#include "device/gamepad/gamepad_consumer.h"
#include "ppapi/host/resource_host.h"

namespace device {
class GamepadService;
}

namespace ppapi {
namespace host {
    struct ReplyMessageContext;
}
}

namespace content {

class BrowserPpapiHost;

class CONTENT_EXPORT PepperGamepadHost : public ppapi::host::ResourceHost,
                                         public device::GamepadConsumer {
public:
    PepperGamepadHost(BrowserPpapiHost* host,
        PP_Instance instance,
        PP_Resource resource);

    // Allows tests to specify a gamepad service to use rather than the global
    // singleton. The caller owns the gamepad_service pointer.
    PepperGamepadHost(device::GamepadService* gamepad_service,
        BrowserPpapiHost* host,
        PP_Instance instance,
        PP_Resource resource);

    ~PepperGamepadHost() override;

    int32_t OnResourceMessageReceived(
        const IPC::Message& msg,
        ppapi::host::HostMessageContext* context) override;

    // GamepadConsumer implementation.
    void OnGamepadConnected(unsigned index,
        const blink::WebGamepad& gamepad) override { }
    void OnGamepadDisconnected(unsigned index,
        const blink::WebGamepad& gamepad) override { }

private:
    int32_t OnRequestMemory(ppapi::host::HostMessageContext* context);

    void GotUserGesture(const ppapi::host::ReplyMessageContext& in_context);

    BrowserPpapiHost* browser_ppapi_host_;

    device::GamepadService* gamepad_service_;

    bool is_started_;

    base::WeakPtrFactory<PepperGamepadHost> weak_factory_;

    DISALLOW_COPY_AND_ASSIGN(PepperGamepadHost);
};

} // namespace content

#endif // CONTENT_BROWSER_RENDERER_HOST_PEPPER_PEPPER_GAMEPAD_HOST_H_
